International Journal of Biomedical Imaging / 2012 / Article / Tab 2

Research Article

Serial FEM/XFEM-Based Update of Preoperative Brain Images Using Intraoperative MRI

Table 2

Values of and , , for each deformation modeling based on a pair of two successive iMR images. In contrast with Table 1, is successively warped, rather than , for each deformation modeling. First value gives measure of similarity of images rigidly registered, while second value gives measure of similarity of images both rigidly and (subsequently) nonrigidly registered. For each , only the whole-brain region is taken into account for edge extraction.

Modified Hausdorff distance (mm) betweenBrain shift1st resection2nd resection3rd resection
edges extracted from two iMR images

Patient 1 Whole-brain region 1.24 1.07 1.50 1.21 1.80 1.31 1.781.38
Tumor region and neighborhood

Patient 2 Whole-brain region 1.01 1.04 1.10 1.16 1.36 1.31 1.68 1.42
Tumor region and neighborhood1.36 1.281.76 1.44

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